* Add serveral flags to CLI & generalize CLI code

definition.py:
	- Add use_zip_chunks, start_frame, stop_frame, and chunk_size
	  as CLI flags
	- Rename --bug to --bug_tracker to be consistent with website
	  and API
	- No longer include optional kwargs in all requests
core.py:
	- Add a single loop to handle all kwargs for extensibility
	- Lump optional task_create args into kwargs for brevity

* Add --bug as alias for --bug_tracker

- Add back old --bug flag for backwards compatability

* Update licence header

Update licence header for core.py

* Remove redundant parameter assignment

- Remove hardcoded `image_quality` default value, as this is already
  handled by the argparse default value.

* CHANGELOG entry for new CLI flags

* CLI linting fixes

- Several linting fixes for CLI

* Fix CLI test

- Re-add default image_quality in case task_create is called manually

* Resolve changelog merge conflict

* Update CHANGELOG.md

Co-authored-by: Andrey Zhavoronkov <andrey.zhavoronkov@intel.com>